More Calculators
706 free more calculators tools in the Calculators & Converters collection — every one runs in your browser with no signup and no uploads. Page 1 of 8.
JAMB / Post-UTME / WAEC Aggregate Score Calculator
Work out your Nigerian university aggregate from JAMB, Post-UTME and O'level.
Discount & Sale Price Calculator
Find the sale price, work out % off, or combine multiple stacked discounts.
Tally Counter
A free online click counter that remembers your count
Cost Per Serving Calculator
Add up recipe ingredient costs and divide by servings to get the cost of each portion.
Random Letter Generator
Pick one or more random letters from A to Z
Significant Figures Calculator
Count the significant figures in a number and round to any number of sig figs
Hypotenuse Calculator
Find the hypotenuse or a missing leg of a right triangle with the Pythagorean theorem
Alveolar-Arterial (A-a) Gradient Calculator
Assess pulmonary gas exchange from ABG and FiO2
ABV Calculator
Calculate alcohol by volume from original and final gravity readings
Academic Probation Recovery Calculator
Calculate the GPA you need next term to exit probation
Paracetamol Toxicity Nomogram (Rumack-Matthew)
Plot serum paracetamol level vs time to guide NAC treatment
ACT Composite Score Calculator
Calculate your ACT composite from section scores.
ACT Superscore Calculator
Calculate your ACT superscore from multiple test dates
ACT to SAT Score Conversion Calculator
Convert your ACT composite to an equivalent SAT total.
ADA / Section 508 Accessibility Checklist
Interactive checklist for US federal and commercial accessibility law
EU AI Act Conformity Assessment Pathway
Map the conformity assessment route required for your high-risk AI system
AI Liability Risk Scorer (EU AI Liability Directive)
Estimate civil liability exposure under the proposed EU AI Liability Directive
AI Model Training Carbon Estimator
Estimate the CO2e of training a machine-learning model from hardware, time, and grid intensity
AI Training Data Rights Checker
Check if using a dataset for AI training is lawful under copyright and data-protection law
Air Cargo Revenue Tonne-Kilometre Calculator
Calculate RTK, ATK, and load factor for air cargo performance benchmarking
Algorithmic Bias Self-Audit Tool
Self-audit an AI decision-making system for bias risk across protected characteristics.
AMM Price Impact Calculator
Calculate price impact for large trades on constant-product AMMs
Sill Plate Anchor Bolt Layout Calculator
Calculate anchor bolt count, spacing, and edge distances per IRC rules
Anchor Scope & Chain Calculator
Calculate required anchor chain scope for safe holding in any depth and conditions
Anaesthetic Gas Flow Rate Calculator
Calculate fresh gas flow and volatile agent consumption for inhalation anaesthesia
Antibiotic PK/PD Target Attainment Calculator
Predict fT>MIC, AUC/MIC, or Cmax/MIC for time- or conc-dependent antibiotics
Antibiotic MIC Breakpoint Interpreter (EUCAST/CLSI)
Classify S, I, or R from an MIC using breakpoint tables
AP Credit Hours Calculator
Calculate total college credit hours earned from AP exams.
AP vs IB Credit Equivalency Checker
Compare AP and IB credit grants at US universities.
APACHE II Score Calculator
ICU severity of illness and mortality estimation
Apparent Attenuation Calculator
Measure how thoroughly your yeast fermented the available sugars from OG and FG.
Astrophotography Target Framing Calculator
Check if a deep-sky object fits your sensor's field of view
Astrophotography Mosaic Panel Calculator
Calculate panel count and grid layout for a multi-frame mosaic
Astrophotography Total Exposure Calculator
How many subs and how much total time for a target SNR
Audio Buffer Size & Latency Calculator
Convert buffer size and sample rate to round-trip audio latency in ms
Mix Bus Clip Headroom Calculator
Calculate how much headroom to leave on the mix bus for mastering
Theoretical Noise Floor by Bit Depth Calculator
Calculate the theoretical dynamic range and noise floor for any bit depth
Australia Annual Leave Entitlement Calculator
Calculate Australian 4-weeks minimum annual leave with shift-worker rules
Aviation Fuel Reserve Calculator (VFR/IFR)
Calculate trip, alternate, and 45-minute reserve fuel per FAR 91.151/91.167
Aviation Noise Exposure Reference Tool
Look up aircraft noise category, EPNdB limits, and Stage/Chapter classification
Ballast Calculation Tool
Find the ballast water mass needed to reach a target draft after discharge
Ballistic Zero Range Calculator
Find the optimal zero and maximum point-blank range for your rifle.
Baseball ERA Calculator
Calculate a pitcher's Earned Run Average from raw stats.
Baseball WHIP Calculator
Calculate a pitcher's WHIP and compare to MLB benchmarks.
Basketball Player Efficiency Rating (PER) Calculator
Calculate a basketball player's PER from box score stats.
Basketball Net Rating Calculator
Calculate a team or lineup's net rating from points data.
Basketball Shot Clock Situation Guide
Get the correct shot clock reset value for any game situation.
Basketball True Shooting % Calculator
Calculate a player's True Shooting percentage from raw stats.
Brew Batch Scaling Calculator
Scale any homebrew recipe up or down to a new batch volume.
Bead Count & Spacing Calculator
Calculate bead counts and spacing for bracelets, necklaces, and patterns
Beaufort Scale Wind & Sea State Reference
Convert Beaufort force to wind speed, wave height, and sea-state description
Bee Colony Honey Yield Estimator
Estimate seasonal honey yield from colony strength, forage area, and nectar flow
Beekeeping Honey Yield Estimator
Estimate honey yield from hive inspection data
Hop Bitterness Decay Calculator
Model IBU reduction over storage time and temperature for hop-forward beers
Beer Style Parameter Range Checker
Check if your OG, FG, IBU, ABV, and SRM fit the BJCP style guidelines
Big Integer Calculator
Perform arithmetic on arbitrarily large integers beyond float64
Billable Hours Calculator
Convert time entries to billable fees at multiple rate tiers in seconds
Biometric Data Processing Impact Checker
Check lawfulness and safeguard requirements for biometric data under GDPR
Bishop Score for Labour Induction
Cervical readiness score to predict induction success
Board Feet Calculator
Calculate board feet from thickness, width, and length in seconds
Board Game Score Sheet Generator
Digital score tracker for any board game
Boring Bar Deflection Calculator
Estimate boring bar tip deflection under cutting force for overhang ratios
Bowling Handicap Series Calculator
Calculate your handicap-adjusted series from raw game scores
Box Fill Calculator (NEC 314.16)
Sum conductor, device, clamp, and fitting equivalents to verify junction/outlet box fill
Boxing Punch Output Calculator
Estimate total punches thrown, landed, and accuracy per round.
Brew Water Boiling Hardness Reducer
Calculate carbonate hardness reduction from pre-boiling brewing water
Brew Day Timeline Planner
Build a timed, step-by-step brew day schedule from your start time and step durations.
Wine Chaptalization (Sugar Addition) Calculator
Calculate the sugar needed to raise must Brix to a target potential ABV
Bullet Drop Ballistics Calculator
Calculate bullet drop and wind drift for any rifle cartridge to 1000 yards.
Bundling (Adjustment Factor) Derating Calculator (NEC 310.15(C))
Apply NEC bundling adjustment factors when more than 3 current-carrying conductors share a raceway
Busbar Ampacity Calculator
Estimate the current-carrying capacity of copper or aluminum bus bars.
Cable Tray Fill Calculator (NEC 392)
Verify cable tray fill area for single and multiconductor cables per NEC Article 392.
Calcium–Phosphorus Product Calculator
CKD cardiovascular risk from Ca x P product in dialysis patients
Cambridge B2/C1/C2 Score Guide
Interpret your Cambridge English exam score on the Cambridge scale.
Camera Angular Resolution Calculator
Find the minimum resolvable angle for a camera sensor and lens
Camera Sensor Size Comparison Tool
Compare physical sensor dimensions and crop factors across camera formats
Canada EI Premium Calculator
Calculate Canadian Employment Insurance premiums for employee and employer
Capital Gains Tax Calculator (2026)
Calculate federal long-term and short-term capital gains tax
Car Commute Carbon Calculator
Calculate annual CO2 from your daily commute by car or public transport
Carbon Inset vs Offset Decision Tool
Decide whether value-chain insetting or market offsetting fits your strategy
Freight Carbon Footprint & Offset Calculator
Calculate CO2e emissions per tonne-km for road, rail, sea, and air freight
Cargo Insurance Premium Estimator
Estimate marine cargo insurance premium from commodity, value, and voyage
Cargo Theft & Loss Recovery Calculator
Estimate cargo claim recovery after deductibles, depreciation, and carrier liability caps
Cat Food Daily Portion Calculator
Calculate ideal daily food amount for your cat
CBAM Certificate Quantity & Cost Planner
Plan CBAM certificate purchases and cost for your import declaration
CE Marking Decision Tree
Find the right CE directives and conformity route for your product.
CEFR Language Level Checker
Map a language exam score to its CEFR level from A1 to C2.
Cell Density from OD600 Calculator
Convert absorbance at 600 nm to cells/mL or CFU/mL
Cell Doubling Time Calculator
Calculate population doubling time from two cell counts
Cell Viability Calculator (Trypan Blue Exclusion)
Calculate live cell count and viability % from haemocytometer data
Center Drill Depth Calculator
Calculate center-drill plunge depth to create the correct 60-degree center
HVAC CFM Airflow Calculator
Calculate required supply-air CFM from a room's heat load and supply-air temperature difference
CHA₂DS₂-VASc Score Calculator
Stroke risk in atrial fibrillation for anticoagulation decisions
CHADS₂ Stroke Risk Score
Original stroke risk tool for AF patients
Charter Party Freight Calculator
Calculate voyage freight, laytime, and despatch or demurrage from CP terms
Child-Pugh Score Calculator
Cirrhosis severity classification A, B, or C
Child Support Estimator by State
Estimate monthly child-support obligations using income-shares or percentage models
Child Tax Credit Calculator
Calculate your 2026 federal Child Tax Credit and phase-out
Cider ABV Calculator
Calculate the alcohol content of hard cider from juice gravity and FG.
Circular Economy Maturity Assessment
Assess your company's circular economy maturity across design, use, and recovery