Free online tools that work right in your browser
Free online calculators, converters and generators that run entirely in your browser. Nothing to install, no signup, and your inputs never leave your device.
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View all toolsPoints Calculator
Turn monthly spend, points per dollar and cents per point into a yearly rewards value, net of any annual fee, with the spend needed to cover it.
Cash Back Calculator
Estimate yearly cash back from everyday and bonus-category spending, then net out the annual fee and a sign-up offer to see the blended percentage.
XML Formatter
Re-indent XML with 2 spaces, 4 spaces or tabs, or minify it to one line. Mismatched or unclosed tags are named, and elements and depth are counted.
Crypto Mining Calculator
Work out coins mined, revenue, power cost and profit per day from your share of network hashrate, plus the break-even kWh price and hardware payback.
Mining Profitability Calculator
Estimate proof-of-work mining revenue, electricity cost and daily profit from your hashrate, network hashrate, block reward, pool fee and power price.
Bitcoin Mining Profit
Estimate bitcoin mining profit per day from hashrate, watts, electricity price, difficulty and pool fee, plus the break-even power price per kWh.
Hourly Invoice
Turn a list of timed tasks into an hourly invoice: per-line amounts, billing increments of 6 or 15 minutes, sales tax or VAT and a total due.
Rental Property Calculator
Work out a rental's yearly net operating income, monthly cash flow, cap rate and cash-on-cash return from price, rent, vacancy and itemised running costs.
Bitcoin Profit Calculator
Work out the profit or loss on a bitcoin trade from the amount invested, buy and sell prices and exchange fees, with the break-even sell price.
Cryptocurrency Profit Calculator
Work out profit or loss on a crypto trade from the amount invested, buy and sell prices and exchange fees, with ROI and the break-even sell price.
Investment Return Calculator
Work out the total return and the annualized return on an investment from what you paid, what it is worth now, dividends received and years held.
Uniswap Calculator
Estimate impermanent loss and fee earnings for a Uniswap liquidity position. A 2x price move costs 5.72% versus holding before fees are counted.