Kalkulator Usia
Hitung usia tepat dari tanggal lahir
Kalkulator Selisih Tanggal
Temukan selisih antara dua tanggal
Kalkulator Durasi Waktu
Tambah atau kurangi durasi waktu dengan mudah
Kalkulator Persentase
Hitung persentase, perubahan, dan rasio secara instan
Kalkulator Diskon
Hitung harga akhir setelah diskon
Kalkulator BMI
Hitung Indeks Massa Tubuh
Kalkulator Kehamilan
Perkirakan tanggal persalinan
Kalkulator Kalori
Hitung kebutuhan kalori harian
Kalkulator Kecepatan
Hitung kecepatan, jarak, atau waktu
Kalkulator Biaya Listrik
Hitung biaya listrik dan konsumsi daya untuk perangkat dan peralatan Anda.
Kalkulator Bunga
Hitung bunga sederhana dan majemuk
Kalkulator Pinjaman
Hitung pembayaran bulanan dan total bunga
Kalkulator Hipotek
Perkirakan pembayaran hipotek bulanan
Kalkulator PPN
Tambah atau hapus PPN dari jumlah apapun
Kalkulator Transfer Data
Hitung waktu transfer file dan kecepatan yang diperlukan
Konverter Unit
Konversi antara panjang, berat, suhu, dan lainnya
Free Online Calculators for Everyday Decisions
This calculator collection covers the math most people actually need to do: age, BMI, calorie and nutrition, loan and mortgage, interest, VAT and discount, percentage, timestamp, unit and color conversions, dates, and many more. Each calculator is focused on one decision, runs instantly in your browser, and explains the inputs so you understand what you are calculating.
Unlike spreadsheets or phone app calculators, these tools are purpose-built for specific questions. Pick the one that matches the decision you are making and skip the setup. No formulas to remember, no signup, no ads in the middle of the results.
Why These Calculators
Purpose-Built for Each Question
Each calculator is tailored to one common question — loan payment, BMI, discount, percentage — so you see only the inputs that matter.
Clear Explanations
Every result shows how it was calculated. No black box. You can verify the math yourself or adjust assumptions.
No Signup or App
Open the calculator, punch in numbers, get an answer. No account, no install, no paywall.
Works Offline After Load
Calculations run in your browser. Once the page is loaded, you can keep working without an internet connection.
Common Calculator Tasks
People use this collection most often for:
- Working out a monthly payment on a car loan, mortgage, or personal loan before signing.
- Checking BMI, calorie targets, or nutrition numbers when starting a health or fitness plan.
- Calculating VAT, discount, or tip quickly at a register, restaurant, or checkout.
- Converting a Unix timestamp to a human date, or vice versa, for debugging or log analysis.
- Counting the days, months, or years between two dates for deadlines, age calculations, or project planning.
How to Use the Calculators
Every calculator follows the same flow:
- Pick a calculator. Choose the one that matches your question from the cards above.
- Fill in the inputs. Type or adjust each value. Most calculators update the result as you type, so you can experiment with scenarios.
- Read the breakdown. See the final answer plus the intermediate calculations. Copy or screenshot the result as needed.
Calculators FAQ
Are these calculations accurate?
Yes — each calculator uses the standard formula for its domain (loan amortization, BMI, percentage, etc.). For critical financial or medical decisions, always double-check with a professional.
Do I need to install anything?
No. Every calculator runs directly in your browser. There is no download, no sign-in, and no app to install.
Are my inputs saved anywhere?
No. All calculations happen locally. We do not store your inputs, results, or usage on our server.
Do the tools work on mobile?
Yes. Every calculator is responsive and works well on phones, tablets, and desktops.
Can I use the results in a document?
Yes. Copy the result or take a screenshot. For regulated decisions (lending, medical) we recommend noting the tool and inputs used for reference.