Solvemis.
No sign-up, no waiting. Every tool runs in your browser.
Nothing matches yet. Noted — it helps us decide what to build next.
Most used
- Internet Speed Test Press the button and in a few seconds you will know how fast your connection downloads and uploads, and how quickly it responds. Nothing is measured until you decide.
- What Is My IP Your public IP address shows up above as soon as the page loads, along with your IPv4 and IPv6, your provider and your approximate location. It is not stored anywhere.
- BMI Calculator Enter your weight and height to get your BMI instantly. Everything is calculated in your browser — nothing is sent anywhere or stored.
All tools
Money
- Compound Interest Calculator Enter your starting amount, what you will add each month, the interest rate and the number of years to see your final balance and how much of it is interest.
- Mortgage Calculator Enter the home price, down payment, interest rate and term to see your monthly payment, the total interest and the cash you need at closing. Open “More options” to try extra payments.
- How Much House Can I Afford? Enter your gross monthly income, your savings and the rate you expect to see the most house you can afford, how much would be the mortgage, and whether your income or your savings is the limit.
- FIRE Calculator Enter what you have saved, what you invest, your expected return, inflation and what you need each month to live. You will see how many years you have left, the date and the age you would get there.
- Loan Calculator Enter the loan amount, interest rate and term to see your monthly payment, the interest you pay and the APR. Below, the same loan over different terms and, if you like, another offer or paying cash.
- 50/30/20 Budget Calculator Enter your take-home pay and your expenses, monthly or yearly, to see how much goes to needs, wants and savings, and how far you are from 50/30/20: which block is over and how much more you need to save to reach 20%.
- Sinking Fund Calculator Enter the bills you don't pay every month, like insurance or property tax, with the month of the last charge. You'll see how much to transfer each month to a separate account so they never catch you short, how much it needs today and, if you're short, how to catch up.
Travel
Business
- Break-Even Point Calculator Enter your fixed costs, the cost of each unit and its selling price to see how many you need to sell each month to stop losing money and, optionally, when you earn back what you invested.
- Time Card Calculator Enter your start time, end time and unpaid break for each day to see the week's total in hours and minutes and in decimal hours. Add your hourly rate to see gross pay too.
Health
- BMI Calculator Enter your weight and height to get your BMI instantly. Everything is calculated in your browser — nothing is sent anywhere or stored.
- Running Pace Calculator Enter a distance and a time to see your pace per mile and your speed. You can also work out the time at a given pace or the distance, and estimate your 5K, 10K, half marathon and marathon times.
- One Rep Max Calculator (1RM) Enter the weight you lift and how many reps you can do with it to see your estimated one rep max (1RM), plus a chart of the weight for every rep count from 1 to 20.
- Heart Rate Zone Calculator Enter your age to see your estimated max heart rate and the heart rate for each training zone, from Z1 to Z5. Add your resting heart rate or your real max for zones that fit you better.
Internet
- What Is My IP Your public IP address shows up above as soon as the page loads, along with your IPv4 and IPv6, your provider and your approximate location. It is not stored anywhere.
- Internet Speed Test Press the button and in a few seconds you will know how fast your connection downloads and uploads, and how quickly it responds. Nothing is measured until you decide.
- Password Generator Your password appears above as soon as the page loads, created at random in your own browser. Choose the length and which characters it uses, copy it and you're done: it is never sent or stored anywhere.
- Has My Password Been Leaked? Type the password and press «Check»: you will see the only thing that would leave your device, 5 characters of its fingerprint. Known breaches are only searched when you press «Send», and the comparison happens here.
- QR Code Generator Type a link or some text, or fill in your Wi-Fi, a contact or an email, and download the QR code as PNG or SVG. It is created in your browser and never expires.
- Subnet Calculator Enter an IP address with its prefix (192.168.1.10/24) or subnet mask (255.255.255.0) to instantly see the network, broadcast, first and last host and how many hosts fit. Works with IPv4 and IPv6.
Math
- Percentage Calculator Three percentage calculations in one tool. Pick the mode, type two numbers, and the answer appears as you go.
- Final Grade Calculator Enter your current grade, how much the final exam is worth and the grade you want, and see what you need on the final. Don't know your current grade? Work it out from several grades and their weights.
- Graphing Calculator Type a calculation and you'll see the result, like on a scientific calculator; if it has x, it gets plotted. Up to three functions at once, with their intercepts, maxima and minima, where they cross, and a table of values you can download.
Converters
- Your Name in Japanese Type your name and you'll see how it's written in Japanese, in katakana, the script Japan uses for foreign names. We also show you how your name sounds and which katakana comes from each syllable.
- Your Name in Korean Type your name and you'll see how it's written in Korean, in hangul, with South Korea's official standard for English words. We also show you how your name sounds and what comes from each syllable.