Global
EMI Loan Calculator
Monthly instalment, total interest & amortization for any loan.
Free · No signup · Privacy-friendly · Updated for Bangladesh
Free online calculators for Bangladesh& worldwide
CostNest helps you estimate electricity bills, income tax, loans, construction materials, solar savings, land area, GPA, and everyday math — with clear formulas and instant results in your browser.
- Inputs stay on your device
- Works instantly
- BD rates + global tools
- Free tools
- 111
- Categories
- 12
- Signup
- 0
- Local rates
- BD
Most Popular
Start with the most-used tools
Thousands of visitors use these every day — jump straight in
📅 Everyday Calculators
Finance, bills & travel — tools you reach for every week
2025-26
Income Tax Calculator BD
NBR 2025-26 slabs, exemptions, rebate, minimum tax & AIT.
Salary Calculator
Estimate monthly and yearly take-home salary after deductions.
New
VAT Calculator BD
Add or extract 15% NBR VAT. All Bangladesh VAT rates supported.
New
Zakat Calculator
2.5% Zakat on net wealth above Nisab. Cash, gold, savings & debts.
New
FD / DPS Calculator
Fixed Deposit and DPS maturity amount, interest earned and monthly savings — all BD bank schemes.
New
Compound Interest Calculator
Compound interest with yearly, quarterly, monthly or daily compounding. Inflation-adjusted real return.
New
Gratuity Calculator BD
Bangladesh labour law gratuity — 30-day last salary per year for 5+ yrs. Instant breakdown for employers & employees.
New
TDS & VDS Calculator BD
Estimate Bangladesh withholding tax (TDS) and VAT (VDS) on vendor bills. Fully NBR compliant.
New
Prepaid Meter Calculator BD
Convert prepaid recharge amount to units (kWh) after utility charges. Supports DESCO, DPDC & BREB.
New
L/C Cost Calculator
Estimate bank commissions, transmission, SWIFT, stamp duties and VAT for opening import or back-to-back L/Cs.
New
Sanchayapatra Calculator
Calculate monthly, quarterly, and maturity returns on Bangladesh Savings Certificates. Estimates slabs and tax.
New
Freelancer Hourly Rate Calculator
Convert target salary to freelancer hourly rate factoring in expenses, taxes, unpaid leave, and billable utilization.
New
Gold Price & Buying Cost
Calculate gold jewellery price in Bangladesh — weight conversions, BAJUS rates, making charge and 5% NBR VAT.
New
Remittance Cash Incentive
Convert foreign currency and calculate the 2.5% government cash incentive + bank bonuses for remittances.
New
Prepaid Gas Bill & Meter
Calculate prepaid gas meter units, recharge breakdown, and remaining days for Titas Gas and others.
Updated
Trip Cost Calculator
Bus, train, plane, ship or car — full trip cost with passengers.
Fuel Cost Calculator
Estimate fuel expense from price, distance and mileage.
Mileage Calculator
Find vehicle mileage from distance covered and fuel used.
New
Car Import Duty Calculator BD
Bangladesh car import duty, supplementary duty, VAT and advance income tax on reconditioned and new vehicles.
New
CNG & LPG Conversion Cost Calculator
Estimate CNG and LPG conversion costs, compare Traditional and Sequential kits, check company-wise charges, find the best installers in Bangladesh, and calculate break-even period.
New
CNG & LPG Calculator Hub
Full CNG & LPG resource hub — tank capacity, refill cost, fuel savings, break-even, cost per km, and FAQs.
New
EV Charging Calculator
Estimate EV battery charging time and session cost based on battery size, charging power, efficiency, and electricity rates.
New
Age Calculator
Exact age in years, months, days. Next birthday countdown & zodiac.
New
Unit Converter
Length, weight, temperature, area, volume, speed and data units.
New
Date Difference Calculator
Days, weeks and months between two dates. Working days included.
New
Percentage Calculator
Three modes: X% of Y, X is what % of Y, and % change.
New
Currency Converter
BDT to USD, EUR, GBP, INR and 30+ currencies with live rates.
New
Discount Calculator
Sale price after discount, discount %, or find original price.
2026
Internet Bill Calculator BD
Carnival, Link3, Amber IT, DOT, BTCL, Triangle, MiME & mobile data.
New
AC BTU Calculator
Right-size your air conditioner — room BTU load from area, ceiling height, insulation, climate and occupancy.
Why CostNest?
Built for speed, accuracy and privacy
Trusted by users across Bangladesh and beyond
Instant Results
Zero loading time. Every calculation runs entirely in your browser.
100% Private
No login required. Calculator inputs stay on your device.
Works Everywhere
Fully optimised for mobile, tablet and desktop — any device.
Always Accurate
Updated 2026 BD rates and global standards. Reliable every time.
About CostNest
Your free calculator hub for Bangladesh & beyond
Every calculator runs entirely in your browser — no signup, no loading screens, your data never leaves your device.
💰
Everyday Finance
Trip cost, EMI, BPDB electricity, NBR income tax 2025-26, internet bills, fuel, mileage, salary — tools for your daily life.
🏗️
Full Construction Suite
Building cost (economy to premium), concrete, paint, tiles, floor materials, brick & mortar, plastering, MS steel rod.
☀️
Solar & Energy
Panel count, wattage, monthly savings, payback period, battery bank sizing — for off-grid or hybrid setups.
🏃
Health & Fitness
BMI, BMR, TDEE, calories, macros, protein, water intake, sleep cycles, and body fat — for planning, not medical advice.
🇧🇩
BD-Specific Tools
Land Area (Katha, Bigha, Decimal), Zakat with Nisab check, GPA/CGPA for SSC/HSC/University, VAT at NBR 15%.
👕
Garment & RMG Industry
Garment costing, CM, FOB price, profit margin, export cost, SMV, buyer commission, and duty drawback — plus fabric GSM, yarn count conversion, fabric consumption, sewing thread estimation, line balancing, defects (DHU), machine requirement, line efficiency, overtime pay, target production, and washing softener & dye consumption.
Browser private
Inputs stay on your device
Works worldwide
BD rates + global standards
Instant & free
111 tools · no signup
From the Blog
Guides & Explained
Plain-language articles behind every calculator.
Garment & RMG
CBM & Container Loading Optimization Guide for Garment Exporters
11 Jun 20268 min
Finance & BillsHow to Calculate Your Freelancer Hourly Rate: The Contractor Salary Guide
11 Jun 20267 min
Fuel & VehicleEV Charging Time & Cost Explained: Level 1, Level 2, and DC Fast Charging
11 Jun 20268 min
Finance & BillsBAJUS Gold Purity and Buying Cost Guide: How Gold Prices are Calculated in Bangladesh
11 Jun 20268 min
Finance & BillsHow to Send Remittance Legally to Bangladesh: 2.5% Cash Incentive Guide
11 Jun 20268 min
Finance & BillsPrepaid Gas Meter Bangladesh: Slab Rates and Titas Gas Recharge Guide
11 Jun 20268 min
FAQ
Common questions
Things people ask before they start using CostNest.
What can I calculate on CostNest?
You get 111 free tools across 12 categories — electricity and tax for Bangladesh, construction and material estimates, solar sizing, health references, land units, GPA helpers, everyday finance, plus a full RMG industry suite covering garment costing, fabric & textile, production & industrial engineering (efficiency, SAM, manpower, capacity), and a dedicated washing plant cluster.
Do I need to sign up?
No account. Open a tool, enter your numbers, and read the result. Nothing you type into a calculator is sent to our servers.
Are the Bangladesh rates up to date?
We update BPDB slab logic, NBR tax brackets, and common BD construction references when sources change. Still double-check before filing or signing contracts.
Can I use this on my phone?
Yes—the site is laid out for phones and tablets as well as desktop browsers.
Who are the RMG / garment tools for?
The Garment Costing, Fabric & Textile, and Production & IE hubs are designed for Bangladesh's ready-made garment (RMG) industry — merchandisers, production managers, IE teams, and factory owners who need quick, accurate calculations for costing, fabric buying, line efficiency, and capacity planning.