123 free tools for Bangladesh and global users. No signup — calculations run entirely in your browser. Choose a category below or scroll through all tools.
123 tools across 12 categoriesBuilding cost, concrete, paint, tiles, floor materials, brick, plaster and steel rod calculators
Full itemised cost — foundation to paint. Economy to premium grade.
Volume, cement bags, sand & aggregate for any slab or column.
Litres, tin count & cost for any room. Multi-room & multi-coat.
Tile count, wastage & cost. All standard sizes — BD & global.
Ceramic, marble, granite, vinyl, laminate, wood, epoxy & more.
Brick count, cement bags & sand — BD, UK, US, Indian brick sizes.
Cement & sand for internal, external or ceiling plaster.
MS rod weight in kg & tonnes. All diameters 8–40mm. Cost estimate.
Plan your solar setup — panels, savings and battery backup
Panel count, wattage & cost for your home or business. BD & global.
Monthly savings, payback period & ROI from solar installation.
Battery size, backup hours & bank capacity for off-grid or hybrid.
Bangladesh electricity bill using BPDB 2024 slab rates.
EMI, income tax, salary, VAT and Zakat for Bangladesh
Monthly instalment, total interest & amortization for any loan.
NBR 2025-26 slabs, exemptions, rebate, minimum tax & AIT.
Estimate monthly and yearly take-home salary after deductions.
Add or extract 15% NBR VAT. All Bangladesh VAT rates supported.
2.5% Zakat on net wealth above Nisab. Cash, gold, savings & debts.
Fixed Deposit and DPS maturity amount, interest earned and monthly savings — all BD bank schemes.
Compound interest with yearly, quarterly, monthly or daily compounding. Inflation-adjusted real return.
Bangladesh labour law gratuity — 30-day last salary per year for 5+ yrs. Instant breakdown for employers & employees.
Estimate Bangladesh withholding tax (TDS) and VAT (VDS) on vendor bills. Fully NBR compliant.
Convert prepaid recharge amount to units (kWh) after utility charges. Supports DESCO, DPDC & BREB.
Estimate bank commissions, transmission, SWIFT, stamp duties and VAT for opening import or back-to-back L/Cs.
Calculate monthly, quarterly, and maturity returns on Bangladesh Savings Certificates. Estimates slabs and tax.
Convert target salary to freelancer hourly rate factoring in expenses, taxes, unpaid leave, and billable utilization.
Calculate gold jewellery price in Bangladesh — weight conversions, BAJUS rates, making charge and 5% NBR VAT.
Convert foreign currency and calculate the 2.5% government cash incentive + bank bonuses for remittances.
Calculate prepaid gas meter units, recharge breakdown, and remaining days for Titas Gas and others.
Calculate net profit or loss, ROI percentage, fees and break-even price for any cryptocurrency trade.
Calculate profit payments, NBR tax rebate, net investment, and effective yield for Bangladesh Government Sukuk bonds.
Estimate monthly lifetime pensions for Bangladesh Universal Pension Scheme (Pragoti, Probash, Surokkho, Samata).
Calculate Islamic inheritance shares for wives, husbands, sons, daughters, fathers, and mothers under Hanafi law.
BMI, calories, BMR, water intake, sleep, pregnancy, ovulation, heart rate zones, 1RM and lean body mass — educational tools
Body Mass Index with WHO classification and healthy weight range.
Healthy weight range using Robinson, Miller and Hamwi formulas.
Daily calorie target for weight loss, maintenance or muscle gain.
Basal Metabolic Rate — calories your body burns at rest.
Daily water intake by weight, activity and climate.
Best bedtime and wake time based on 90-minute sleep cycles.
Estimate body fat % using Navy method or BMI method.
Daily protein, carbs and fat targets for your fitness goal.
Daily protein goal by bodyweight, activity and fitness objective.
Total Daily Energy Expenditure — maintenance calories with activity.
Estimate your baby's due date from LMP or conception date. Trimesters, milestones, key appointment weeks.
Predict fertile window and ovulation day from your last period and cycle length.
Cardiometabolic risk screen using waist circumference divided by height. Supports cm and inches.
Estimate 1RM strength from reps and load using Epley, Brzycki, Lombardi and other formulas.
Five personalised training zones from max heart rate. Choose Karvonen (HRR) or percentage-based method.
Lean mass in kg or lbs from weight and body fat %, or via Boer / James / Hume formulas.
Estimate kidney function (eGFR) using the CKD-EPI 2021 equation — creatinine, age, sex and race-free.
Predict your baby's gender using the Chinese lunar calendar age and conception chart.
Estimate money saved, cigarettes avoided, and track your physical health recovery timeline after quitting smoking.
Estimate your child's future adult height based on current growth percentiles and parental heights.
Trip cost, fuel expense and mileage calculators
Bus, train, plane, ship or car — full trip cost with passengers.
Estimate fuel expense from price, distance and mileage.
Find vehicle mileage from distance covered and fuel used.
Bangladesh car import duty, supplementary duty, VAT and advance income tax on reconditioned and new vehicles.
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.
Full CNG & LPG resource hub — tank capacity, refill cost, fuel savings, break-even, cost per km, and FAQs.
Estimate EV battery charging time and session cost based on battery size, charging power, efficiency, and electricity rates.
Estimate flight, accommodation, meals, Qurbani, visa fees and convert BDT/SAR budget for Hajj and Umrah packages.
Land area, plot size and rent split calculators for Bangladesh
Katha, Bigha, Decimal, Sqft, Acre, Hectare — BD & global land units.
Calculate plot area from dimensions. Rectangle, triangle and L-shape.
Net buildable area after RAJUK setbacks. FAR and floor area.
Fair rent division for 2–8 roommates. Equal, by room or by income.
Calculate land and apartment registration fees in Bangladesh — stamp duty, gain tax, local gov tax and VAT.
GPA, CGPA, percentage conversion and study planning tools
SSC, HSC & University GPA on Bangladesh 4.00 and 5.00 scale.
Convert exam percentage to GPA for SSC, HSC and university.
Plan exam preparation — subjects, pages and daily schedule.
Calculate weighted class averages and required final exam target scores.
Convert Z-score to P-value or P-value to Z-score. Includes interactive standard normal distribution bell curve.
Unit conversion, date difference, percentage and currency tools
Exact age in years, months, days. Next birthday countdown & zodiac.
Length, weight, temperature, area, volume, speed and data units.
Days, weeks and months between two dates. Working days included.
Three modes: X% of Y, X is what % of Y, and % change.
BDT to USD, EUR, GBP, INR and 30+ currencies with live rates.
Sale price after discount, discount %, or find original price.
Carnival, Link3, Amber IT, DOT, BTCL, Triangle, MiME & mobile data.
Right-size your air conditioner — room BTU load from area, ceiling height, insulation, climate and occupancy.
Calculate monthly water and sewerage bills for Dhaka WASA residential and commercial metered connections.
Convert Gregorian (English) dates to Bangla, Hijri, Persian, Hebrew, Chinese, Indian Saka, Thai, and Japanese calendars.
Extract birth date and calculate exact age from Bangladesh 17-digit or 13-digit NID number. District and eligibility check.
Estimate cattle live weight and meat yield using heart girth & length, and split sharing costs among up to 7 shareholders.
Garment costing, CM, FOB, profit margin and export cost calculators for RMG industry
Full garment cost sheet — fabric, trims, CM, overhead and profit.
Cost of Making per garment — labour, overhead and target margin.
Free On Board price from CM, material, agent commission and freight.
Gross and net profit margin, markup and break-even for garment orders.
Total export cost — production, freight, insurance, duty and charges.
Estimate Standard Minute Value from observed operation timings, ratings and allowances.
Calculate agent commission and target supplier pricing for garment orders.
Estimate flat rate NBR or actual customs duty drawback values for export orders.
Compute CBM volume, empty carton box weight, volumetric weight, and sourcing costs for apparel shipping.
Calculate total CBM and estimate carton packing fit for 20ft, 40ft standard, and high cube shipping containers.
GSM, fabric consumption, yarn conversion and fabric weight calculators for textile professionals
Fabric GSM from weight and sample area. Verify supplier quality.
Fabric requirement per garment — pattern pieces, wastage and shrinkage.
Convert yarn count between Ne, Nm, Tex, Denier and dtex units.
Total fabric weight for a production lot from GSM, width and length.
Calculate total sewing thread required (meters/yards) and number of cones for any garment order based on seam length, stitch type, and wastage.
Estimate warp and weft yarn weight requirements and finished fabric GSM for weaving orders.
Efficiency, SAM, manpower, line balancing, overtime, factory salary, production targets and capacity planning for Bangladesh RMG
Line or operator efficiency — SMV, minutes produced and worked.
Overtime pay at 1.5× or 2× rate — hourly, daily and monthly workers.
Factory worker salary with attendance, overtime and deductions.
Daily and hourly production target from SAM, efficiency and shifts.
Standard Allowed Minutes from operation breakdown, SMV and allowances.
Operators needed to hit a daily target from SAM and efficiency.
Actual vs target efficiency with bottleneck analysis and shift data.
Total overtime cost for the line — per piece and per order impact.
Monthly production capacity from lines, shifts, days and average SAM.
Calculate pitch time, balance delay, and balance efficiency to solve bottleneck lines.
Defects per Hundred Units (DHU) and defect rate tracking dashboard.
Calculate quantity of specific machines needed to achieve target output.
Overall Equipment Effectiveness from availability, performance and quality — the gold standard for factory productivity.
Washing cost, chemical and water consumption, shrinkage, ETP cost and boiler fuel calculators for denim and garment washing plants
Total washing cost per piece — labour, chemicals, water, fuel, overhead.
Chemical dosage and cost per kg of fabric for any wash process.
Litres of water per kg of fabric — normal, enzyme and denim wash.
Steam requirement in kg/hr from machine capacity and process temperature.
Warp and weft shrinkage % from before and after wash measurements.
Daily garment throughput from machine count, cycle time and load.
Machine utilization % from available and productive hours per shift.
Rewash rate and cost impact — pieces rejected and re-processed per lot.
Effluent Treatment Plant cost per m³ — chemicals, power and labour.
Fuel consumption and cost for steam boiler from efficiency and output.
Calculate chemical softener consumption (g/l or % owf) and pricing for fabric loads.
Textile dyeing recipe calculator for dyes, salt, soda and color costs.