Real free tools to love.
No account, no upload, no waiting. Everything runs in your browser and nothing you type leaves it.
Browse by category
All tools →Advertisement
320 × 100
Used most this week
Converters Kg to lbs Kilograms to pounds, live as you type. Finance Mortgage calculator Monthly payment, total interest and a full schedule. Health BMI calculator Body mass index, with the band it falls in. Random Coin flip Heads or tails, with a running tally. Text Binary translator Text to binary and back, UTF-8 aware. Converters Km to miles Kilometres to miles, with the running distances filled in. Converters Celsius to Fahrenheit Celsius to Fahrenheit — the one conversion with an offset. Random Yes or no wheel Two answers, one spin, no arguing. Finance Invoice generator A proper PDF invoice, without an account.
Why nothing here asks you to sign up
Every calculation happens on your device. There is no account to make, no file to upload and no result stored on a server. Advertising pays for the site, which is why you'll see one or two ad slots per page — never above the tool you came for.
How we build and check tools →