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 start and in a few seconds you will know how fast your connection downloads and uploads. Nothing is measured until you choose to.
- What Is My IP? Your public IP address appears above as soon as the page loads, together with your IPv4, IPv6, provider and approximate location. It is not stored anywhere.
- BMI Calculator Enter your weight and height and your BMI appears instantly. The calculation happens inside your browser and no data is sent or stored.
All tools
Money
- Compound Interest Calculator Enter your starting amount, monthly contribution, interest rate and term to see your final balance and how much of it is interest.
- Mortgage Calculator Korea Enter the home price, your own funds, the interest rate and the loan term to see the monthly payment, the total interest and the money you need at signing. Try prepayment too in «More options».
- How Much Can I Borrow in Korea? Enter your annual income (before tax), your available funds and the interest rate you expect to see the maximum home price you can buy, the loan amount and whether your income or your own funds set 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 Calculator Enter your fixed costs, the cost per unit and the selling price to see how much you need to sell each month not to lose money and, if you like, when your investment pays for itself.
- 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 and your BMI appears instantly. The calculation happens inside your browser and no data is sent or stored.
- Running Pace Calculator Enter a distance and a time to see your pace per kilometre 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, your real max or your threshold heart rate for zones that fit you better.
Internet
- What Is My IP? Your public IP address appears above as soon as the page loads, together with your IPv4, IPv6, provider and approximate location. It is not stored anywhere.
- Internet Speed Test Press start and in a few seconds you will know how fast your connection downloads and uploads. Nothing is measured until you choose to.
- 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. Choose the type of calculation, enter two numbers and the result appears instantly.
- 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.