18 free calculators — GPAs, weighted grades, final-exam targets, percent error, significant figures and number base conversion.
Compute your grade point average from course grades and credit hours.
Use calculatorWeigh assignments by percentage to find your current overall course grade.
Use calculatorFind exactly what you need on the final exam to hit your target grade.
Use calculatorCompare experimental results against accepted values with percent error.
Use calculatorRound any number to a chosen count of significant figures.
Use calculatorTranslate Roman numerals to numbers and numbers to Roman numerals.
Use calculatorConvert numbers between decimal, binary, octal and hexadecimal.
Use calculatorEstimate total college cost, net price after aid, and monthly loan payment for tuition plus living expenses over years.
Use calculatorPlan study time from total material, pages or hours and days until exam — see daily hours needed and schedule breakdown.
Use calculatorConvert GPA between 4.0, 5.0 and percentage scales — see equivalent GPA and letter grade.
Use calculatorCalculate final exam grade needed to reach target course grade from current grade and exam weight.
Use calculatorCalculate reading comprehension score from correct answers and time — see percent, WPM and level.
Use calculatorCalculate assignment grade from points earned and total — see percent, letter and GPA points.
Use calculatorCalculate scholarship impact from tuition, scholarship and years — see net cost, savings and remaining need.
Use calculatorPlan student budget from income, aid and expenses — see monthly budget, shortfall and savings.
Use calculatorCalculate monthly savings needed for college: enter total cost, years and current savings to get monthly deposit.
Use calculatorEstimate future tuition from current tuition and inflation — see future cost and total over years.
Use calculatorCalculate graduation progress from credits earned, required and per semester — see semesters left and graduation date.
Use calculatorEducation calculators: GPAs, weighted grades, final-exam targets, percent error, significant figures and number base conversion. Browse 18 free tools for education tasks. Enter values for instant results with formulas shown. No signup needed.
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| Calculator | What It Does | Formula |
|---|---|---|
| GPA Calculator | Compute your grade point average from course grades and credit hours. | GPA = Σ(grade-points × credits) ÷ Σ(credits) |
| Grade Calculator | Weigh assignments by percentage to find your current overall course grade. | grade = Σ(score × weight) ÷ Σ(weights) |
| Final Grade Calculator | Find exactly what you need on the final exam to hit your target grade. | required = (target − current × (100 − weight)% ) ÷ weight% |
| Percent Error Calculator | Compare experimental results against accepted values with percent error. | % error = |experimental − accepted| ÷ |accepted| × 100 |
| Significant Figures Calculator | Round any number to a chosen count of significant figures. | round to n sig figs: identify leading-digit position, keep n digits, round remainder |
| Roman Numeral Converter | Translate Roman numerals to numbers and numbers to Roman numerals. | values: I=1 V=5 X=10 L=50 C=100 D=500 M=1000; smaller-before-larger subtracts |
| Number Base Converter | Convert numbers between decimal, binary, octal and hexadecimal. | each digit position carries its base's power: e.g. hex FF = 15×16 + 15 = 255 |
| College Cost Calculator | Estimate total college cost, net price after aid, and monthly loan payment for tuition plus living expenses over years. | Total = (tuition+living-aid)*years; Loan payment = amortized over 10y if borrowed |
| Study Time Calculator | Plan study time from total material, pages or hours and days until exam — see daily hours needed and schedule breakdown. | Daily = totalHours / days where totalHours = pages*minPerPage/60 if pages |
| GPA Scale Converter | Convert GPA between 4.0, 5.0 and percentage scales — see equivalent GPA and letter grade. | Convert via percentage: 4.0->% = (gpa/4)*100, 5.0->% = (gpa/5)*100, then %->4.0 = %/100*4 |
| Final Exam Calculator | Calculate final exam grade needed to reach target course grade from current grade and exam weight. | Needed = (target - current*(1-weight)) / weight |
| Reading Comprehension Calculator | Calculate reading comprehension score from correct answers and time — see percent, WPM and level. | Score = correct/total*100; WPM = words/minutes; Level = score*WPM factor |
| Assignment Grade Calculator | Calculate assignment grade from points earned and total — see percent, letter and GPA points. | Percent = earned/total*100; Letter A 90, B 80, C 70, D 60; GPA 4.0 scale |
| Scholarship Calculator | Calculate scholarship impact from tuition, scholarship and years — see net cost, savings and remaining need. | Net = tuition - scholarship; Total = net*years; Savings = scholarship*years |
| Student Budget Calculator | Plan student budget from income, aid and expenses — see monthly budget, shortfall and savings. | Total income = income+aid; Balance = total - expenses; Shortfall if negative |
| College Savings Calculator | Calculate monthly savings needed for college: enter total cost, years and current savings to get monthly deposit. | Monthly = (cost - saved*(1+r)^n) * r / ((1+r)^n -1) where r=rate/12, n=years*12 |
| Tuition Inflation Calculator | Estimate future tuition from current tuition and inflation — see future cost and total over years. | Future tuition = current*(1+inflation)^years; Total = sum future*(1+inflation)^i for i=0..duration-1 |
| Graduation Calculator | Calculate graduation progress from credits earned, required and per semester — see semesters left and graduation date. | Remaining = required - earned; Semesters = remaining / perSem; Graduation = current + semesters |
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