All Sri Lanka Calculators
Every tool on HariTools, grouped by what it is for. All of them are free, work in your browser, and are built around Sri Lankan rates, rules, and currency.
37 free tools
Money Tools
MoneyTax, loan, EMI, and money planning tools for Sri Lanka.
Income Tax (APIT) Calculator
Estimate monthly APIT, employee EPF, and take-home salary.
Loan / EMI Calculator
Work out monthly instalments and total interest on a loan in LKR.
Cost to Company (CTC)
Calculate exact SME payroll cost (EPF/ETF vs Take-Home).
Freelancer Hourly Rate
Calculate your optimal hourly freelance rate.
Vehicle Lease EMI Calculator
Calculate your monthly vehicle lease installments, total interest, and loan-to-value ratio for Sri Lankan banks and finance companies.
Loan Eligibility (DBR)
Model monthly repayment room under your own DBR and liability assumptions.
EPF & ETF Calculator
Estimate EPF and ETF contributions, returns, and a retirement balance.
FD & T-Bill Calculator
Calculate your Fixed Deposit or Treasury Bill returns, updated with the latest 10% Withholding Tax (WHT) regulations for Sri Lanka.
Gratuity Calculator
Estimate gratuity under the Payment of Gratuity Act for both salaried and daily-rated employees.
Housing Loan Calculator
Estimate a housing loan instalment plus the stamp duty and fees payable in cash on the day.
Hire Purchase Calculator
Work out hire purchase instalments and the reducing-balance rate a flat quote really equals.
Government Pension
Estimate a public service pension from the last drawn salary and length of service.
Import Cost Calculator
Calculate CIF and the full cascade of Sri Lankan import levies to a landed cost.
Student Tools
StudentGPA and academic planning tools for Sri Lankan students.
Final Exam Target
Calculate exactly what you need to score on your final exam to achieve an A, B, or pass the module based on your assignment and mid-term marks.
Attendance Tracker
Calculate how many university lectures you can safely skip or need to attend to maintain the strict 80% UGC attendance requirement.
Target GPA Estimator
Estimate the GPA average needed across your remaining university credits.
GPA Calculator
Calculate semester and cumulative GPA with credits on a 4.0 scale.
A/L Z-Score
Calculate your A/L Z-score from your marks and the published subject mean and standard deviation.
O/L Results Checker
Convert O/L marks to grades, count passes and credits, and check the A/L entry conditions.
IGCSE Grade Converter
Convert between the 9-1 and A*-G IGCSE grade scales and tally a mixed set of results.
University Cut-offs
Check your Z-score against the UGC cut-off table for every course and district.
Health Tools
HealthBMI and daily health or fitness tools.
Pregnancy Due Date
Calculate your Estimated Due Date (EDD) and track your pregnancy timeline.
Ovulation Calculator
Estimate a likely fertile window and ovulation date.
Age & Date Difference
Calculate exact age in years, months, and days.
Asian BMI & Ideal Weight
Check your Body Mass Index against WHO Asian thresholds.
BMR & Calorie Needs
Find your BMR, daily maintenance calories, and a target for losing or gaining weight.
Blood Donation Date
Find when you can next give blood under the NBTS four-month interval and donor criteria.
Business Tools
BusinessPractical tools for Sri Lankan SMEs, freelancers, and businesses.
Income Tax (APIT) Calculator
Estimate monthly APIT, employee EPF, and take-home salary.
VAT & SSCL Invoice
Calculate Sri Lankan VAT and SSCL cascading taxes.
Cost to Company (CTC)
Calculate exact SME payroll cost (EPF/ETF vs Take-Home).
Freelancer Hourly Rate
Calculate your optimal hourly freelance rate.
Retail Margin & Discount
Calculate retail price, margin, markup, and discount scenarios.
EPF & ETF Calculator
Estimate EPF and ETF contributions, returns, and a retirement balance.
Gratuity Calculator
Estimate gratuity under the Payment of Gratuity Act for both salaried and daily-rated employees.
Hire Purchase Calculator
Work out hire purchase instalments and the reducing-balance rate a flat quote really equals.
Break-Even Calculator
Find the units and revenue needed to cover fixed costs, and your margin of safety.
Import Cost Calculator
Calculate CIF and the full cascade of Sri Lankan import levies to a landed cost.
Everyday Tools
EverydayEveryday tools for percentages, dates, and quick math.
Electricity Bill (PUCSL)
Calculate CEB/LECO bills with updated PUCSL block tariffs.
Age & Date Difference
Calculate exact age in years, months, and days.
Fuel Cost & Road Trip Split
Calculate fuel costs and split it among passengers.
Percentage Calculator
Find percentages, proportions, increases, and decreases instantly.
Tip & Bill Split
Add a tip or service charge and split a bill between friends.
Unit Converter
Convert common length, weight, and temperature measurements.
NIC Decoder
Read the date of birth, age, and gender out of a Sri Lankan NIC, and convert between the old and new formats.
Holidays & Poya Days
Every public holiday and Poya day in 2027, with a countdown to the next one and the year's long weekends.