All calculators
Money math for people who sell things online. Fees, margins, pricing — no fluff, just the numbers.
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Gaming calculators
- ADS sensitivity calculatorWork out the scoped sensitivity multiplier that keeps your aim consistent between hipfire and ADS, using monitor distance matching.
- cm/360 calculatorHow many centimeters of mousepad does a full turn take? The one sensitivity number that means the same thing in every game.
- Enchantment order optimizerPick your enchantments and get the exact combining order that costs the fewest levels — and avoids Too Expensive.
- FOV converterMoving between 16:9, 21:9, or 4:3? Convert your horizontal FOV so you keep the same vertical view and the same feel.
- Gacha pity calculatorHow many pulls until your guarantee, and what are the odds you hit before then? Enter your pity count and planned pulls.
- Minecraft circle generatorEnter a diameter, get a block-by-block circle you can copy as text or download as a PNG. For towers, domes, and anything that shouldn't come out lumpy.
- PSU wattage calculatorAdd up your components' power draw and get the power supply size to actually buy, with proper headroom included.
- Perfect sensitivity finderStop copying pro settings. Start from your game's competitive baseline and bracket to the sensitivity that's actually yours in about six rounds.
- Rust genetics calculatorEnter your centre plant and its neighbours. See exactly which gene slots get overwritten, which survive, and what your crossbreed will come out as.
- Rust wipe countdownLive countdown to the next Rust force wipe, converted to your local time, plus the next weekly wipe most servers run.
- Sensitivity converterConvert your mouse sensitivity between CS2, Valorant, Apex, Overwatch 2, Fortnite, CoD and Rust so your aim feels identical in every game.
- eDPI calculatorDPI × sensitivity = eDPI, the number that makes two players' settings comparable. See yours and where it sits against the typical competitive range.
Platform fee calculators
- Depop fee calculatorSee your real Depop payout after payment processing. Enter a sale price, shipping and item cost to get your profit and margin.
- Etsy fee calculatorEtsy charges a listing fee, a transaction fee, and payment processing — this calculator stacks all three so you see what a sale really costs.
- Facebook Marketplace feesMeta charges 10% with an $0.80 minimum on shipped orders, calculated on the whole transaction. Local pickup is free.
- GOAT fee calculatorGOAT's commission depends on your seller rating. See the full cost at the top 9.5% tier, including the shipping fee and 2.9% cash-out.
- Grailed fee calculatorGrailed charges 9% above $120 and 6% below it, plus Stripe processing. See the real payout at either tier.
- Gumroad fee calculatorGumroad's 10% + $0.50 isn't the whole cost — card processing is charged separately. See both, and what actually reaches you.
- Ko-fi fee calculatorKo-fi's three plans charge very differently. See what the Standard plan takes, and when Ko-fi Gold starts paying for itself.
- Mercari fee calculatorEnter your Mercari sale price and see the payout after the 10% selling fee, plus profit and margin if you add your cost.
- PayPal fee calculatorEnter an amount and see what a PayPal Goods & Services payment actually delivers after the 2.99% fee — and what to ask for so you receive a round number.
- Poshmark fee calculatorWork out your exact Poshmark payout after commission. Enter a sale price and see what lands in your account.
- Roblox DevEx calculatorWork out what Roblox keeps from a sale, what you earn in Robux, and what that converts to in dollars through DevEx.
- Steam Market fee calculatorSteam shows two numbers on every listing. Work out what you actually receive from a sale price, or what to list at to receive a target amount.
- StockX fee calculatorEnter your StockX sale price and see the payout after the transaction fee, payment processing, shipping fee and the $5 minimum — plus your real profit on the flip.
- Stripe fee calculatorEnter a charge amount and see what Stripe's card processing leaves you — and why the fixed 30-ish cents dominates on small payments.
- Stripe vs PayPalEnter what you're charging and see which processor leaves you more, using both companies' current published rates.
- Vinted fee calculatorVinted charges sellers no fees — the buyer pays a protection fee on top instead. See your payout and understand how the buyer-side fee still affects your pricing.
- Whatnot fee calculatorEnter a Whatnot sale price and see the payout after commission and payment processing — then read why per-item fees matter so much in live selling.
- Where to sell comparisonOne price in, every platform's payout out. Compare eBay, Etsy, Depop, Mercari, Poshmark, Vinted, StockX, Whatnot, PayPal and Stripe side by side.
- eBay fee calculatorEnter your eBay sale price and shipping to see the final value fee, the per-order fee, and what actually reaches your account.
Business calculators
- Average order valueRevenue and orders in, AOV out — plus items per order and how many orders a revenue target needs.
- Break-even price calculatorEnter your item cost and your platform's fee percentage. Get the minimum listing price that does not lose money, and the price that hits your target profit.
- CPA calculatorWhat each customer costs in ad spend, and the highest CPA your margin can actually support.
- CPM calculatorSpend and impressions in, CPM out, plus how many impressions a given budget buys at that rate.
- CTR calculatorClicks and impressions in, CTR out, with a read on whether that rate is healthy for the format.
- Consignment split calculatorEnter the sale price and the store's percentage. See your share, the store's cut, and your actual profit if you add what the item cost you.
- Conversion rate calculatorWork out your conversion rate, how many visitors a sales target needs, and what each visitor is worth.
- Handmade pricing calculatorPrice handmade work properly: materials plus real labor plus overhead plus platform fees. See the minimum you should charge and what you actually take home.
- Markup calculatorEnter your cost and a markup percentage to get the selling price, profit, and the margin that markup actually produces.
- Offer floor calculatorSomeone sent a lowball. Enter your cost, the platform, and the profit you want — get the exact lowest offer you can accept and still make money.
- Profit margin calculatorEnter what an item cost you and what it sold for. Get profit, margin, and markup — and see why margin and markup are not the same number.
- ROAS calculatorRevenue divided by ad spend, plus the break-even ROAS your margin demands — the number that decides if a good-looking campaign is actually profitable.
- Reseller ROI calculatorEnter what you paid and what you netted after fees. Get ROI, and if you add how long you held the item, an annualized rate that makes flips comparable.
- Reverse fee calculatorYou want a specific amount to land in your account. Enter it plus the fee percentage, and get the price to charge so fees don't eat your target.
- Sales goal calculatorEnter a monthly profit goal, your average sale price, and your typical margin. Get the number of sales that goal actually requires, per month and per week.
- Sell-through rate calculatorListed versus sold, as a percentage. The single most honest number about whether your sourcing matches what buyers actually want.
Creator tools
- AI API cost calculatorEnter your tokens per call and how many calls you're making. See the real bill on every major model, and which one would be cheapest for the same work.
- Aspect ratio calculatorGet the simplified ratio for any dimensions, and the matching height or width when you resize.
- Discord timestamp generatorPick a date and time, copy the code, paste it in Discord. Everyone sees it in their own timezone automatically — no more "what time is that for me?"
- Engagement rate calculatorWork out engagement rate from likes, comments, shares and saves — measured against followers or actual reach.
- Twitch revenue calculatorEstimate monthly income from subscribers and Bits at your actual revenue split, including the Plus Program's 60/40 and 70/30 tiers.
- YouTube revenue calculatorEstimate AdSense income from monthly views, using RPM and the 55/45 split that decides what actually reaches you.
Student calculators
- Final grade calculatorEnter your current grade, what the final is worth, and the grade you want. Get the exact score you need — plus what happens if you score 100, 70, or skip it.
- GPA calculatorEnter your grades and credit hours to get a proper credit-weighted GPA, with optional bonus points for honours or AP classes.
- Weighted grade calculatorEnter each category's grade and weight — homework, tests, projects — to get the weighted average your syllabus actually produces.
Home and DIY calculators
- AC BTU calculatorRoom size in, BTU rating out — adjusted for sun, kitchens and extra occupants, then rounded to a size you can actually buy.
- Appliance running costEnter watts, hours per day and your electricity rate to see what any device actually costs to run per day, month and year.
- Concrete calculatorSlab dimensions in, bag count out for 40, 50, 60 or 80 pound bags, plus the ready-mix equivalent in cubic yards.
- Deck board calculatorDeck size in, decking board count out — accounting for the gap between boards, plus joists and screw count.
- EV charging costWork out what a charge costs at home, including the energy lost as heat that never reaches your battery.
- Fence calculatorFence length in, full materials list out: posts, rails, pickets and the concrete to set it all.
- Gravel calculatorWork out gravel by weight, not just volume — because quarries sell by the ton and the conversion depends on the stone.
- Mulch calculatorBed size and depth in, cubic yards and bag count out, plus what bulk delivery would cost at your yard price.
- Paint calculatorWall measurements in, gallons out — with doors and windows subtracted and the second coat counted.
- Stair calculatorTotal height in, riser count and exact riser height out — with the rise-plus-run comfort check that decides whether stairs feel right.
- Tile calculatorRoom size and tile size in, tile count and box count out, with a waste allowance for cuts and breakages.
Time and date calculators
- Add or subtract from a dateStart from any date and shift it by days, weeks, months or years to get the exact resulting date and weekday.
- Age calculatorExact age in years, months and days from a birth date, plus total days, the weekday you were born, and the countdown to your next birthday.
- Business days calculatorCount working days between two dates, with weekends removed and a field for the public holidays in your region.
- Days between datesExact days between two dates, plus weekdays only, whole months, and the total in hours.
- Duration calculatorAdd or subtract two durations in hours, minutes and seconds — with the decimal-hours figure timesheets need.
- Running pace calculatorDistance and time in, pace per mile and per kilometre out, with what that pace means for a 5K and a marathon.
- Time card calculatorClock in, clock out, minus the break — get hours worked in decimal form, split into regular and overtime, with gross pay.
- Unix timestamp converterConvert Unix epoch seconds to a readable date in your timezone and UTC, or turn a date into a timestamp — with the Discord tag thrown in.