Excel SQRT Function
Chala mitrano — today SQRT. What number times itself gives this — SQRT(9) is 3.
चला मित्रांनो — आज SQRT. कोणती संख्या स्वतःने गुणली की हे येते — SQRT(9) = 3.
चलो दोस्तों — आज SQRT. कौन सी संख्या स्वयं से गुणा करने पर यह — SQRT(9) = 3।
Purpose
Return the positive square root of a number.
Return value
The non-negative square root.
Syntax
Arguments
| Argument | Required? | Description |
|---|---|---|
number | Required | A number ≥ 0. Negatives return #NUM!. |
Version
All Excel versions. LibreOffice Calc too.
How to use — Why → What → How
Why: Distance and geometry sheets need square roots. SQRT keeps the formula readable. RMS-style checks in Pune engineering and Stuttgart labs. Mixed ₹ and €. In Indian back offices and foreign sister teams, SQRT shows up on totals, rates and pack sheets every week.
What: SQRT returns the non-negative root. Number must be ≥ 0. Read every argument in the table once before you type; each one changes the answer on purpose.
How — numbered steps:
- Type =SQRT(A2).
- Guard negatives with IF or ABS when the model allows.
- POWER(n,0.5) is equivalent for n ≥ 0.
Ravindra Bagale's Tip
Friends, after SQRT, find one column or range in a real workbook this week where this lesson saves time.
Ravindra Bagale's Tip – मराठी
मित्रांनो, SQRT नंतर या आठवड्यात खरी workbook मधील एक संख्या column सुधारा.
Ravindra Bagale's Tip – हिंदी
दोस्तों, SQRT के बाद इस हफ़्ते असली workbook का एक संख्या column सुधारो.
Ravindra Bagale's Tip
Friends, sleep on SQRT; rebuild example 1 tomorrow without looking.
Ravindra Bagale's Tip – मराठी
मित्रांनो, SQRT वर झोपा; उद्या उदाहरण 1 न पाहता लिहा.
Ravindra Bagale's Tip – हिंदी
दोस्तों, SQRT पर सोकर कल उदाहरण 1 बिना देखे लिखो.
Ravindra Bagale's Tip
Friends, say the business question in plain words before =SQRT.
Ravindra Bagale's Tip – मराठी
मित्रांनो, =SQRT आधी व्यवसाय प्रश्न साध्या शब्दांत सांगा.
Ravindra Bagale's Tip – हिंदी
दोस्तों, =SQRT से पहले व्यवसाय प्रश्न सादे शब्दों में बोलो.
Ravindra Bagale's Tip
Friends, check a known case with a calculator before you trust a long SQRT chain.
Ravindra Bagale's Tip – मराठी
मित्रांनो, लांब SQRT chain वर विश्वास ठेवण्यापूर्वी कॅल्क्युलेटरने एक ज्ञात case तपासा.
Ravindra Bagale's Tip – हिंदी
दोस्तों, लंबी SQRT chain पर भरोसा करने से पहले कैलकुलेटर से एक जाना हुआ case जाँचो.
Ravindra Bagale's Tip
Friends, after you finish SQRT, open yesterday’s real workbook and find one place this function would have saved ten minutes.
Ravindra Bagale's Tip – मराठी
मित्रांनो, SQRT नंतर कालची खरी वर्कबुक उघडा आणि शोधा जिथे हे फंक्शन दहा मिनिटे वाचवू शकले असते.
Ravindra Bagale's Tip – हिंदी
दोस्तों, SQRT के बाद कल की असली वर्कबुक खोलो और ढूँढो जहाँ यह फ़ंक्शन दस मिनट बचा सकता था.
Ravindra Bagale's Tip
Friends, treat SQRT like a seatbelt on number columns — check a known case first.
Ravindra Bagale's Tip – मराठी
मित्रांनो, SQRT ला संख्या columns वरील seatbelt समजा — आधी ज्ञात case तपासा.
Ravindra Bagale's Tip – हिंदी
दोस्तों, SQRT को संख्या columns पर seatbelt समझो — पहले जाना हुआ case जाँचो.
Download practice file: practice-sqrt.xlsx (includes sheet About this data, practice sheets, and Answers).
Worked examples
1) Classic
Pune.
| n |
|---|
| 9 |
Result: 3
What it means: 3×3 = 9.
2) Not integer
2.
| n |
|---|
| 2 |
Result: 1.4142135623730951
What it means: ≈1.4142.
3) Stuttgart €
Scaled.
| € |
|---|
| 16 |
Result: 4
What it means: 4.
4) Zero
Edge.
| n |
|---|
| 0 |
Result: 0
What it means: 0.
5) Negative error
Bad input.
| n |
|---|
| -4 |
Result: #NUM!
What it means: Negatives not allowed.
6) Via POWER
Same idea.
| n |
|---|
| 25 |
Result: 5.0
What it means: Same as SQRT(25).
Common errors and fixes
Notes and tips
- Revisit the SQRT errors table after the quiz.
- Build example 1 from memory on a blank sheet.
- Check number vs text if a result looks wrong.
- Teach one tip in Marathi or Hindi this week.
- Keep currency symbols consistent inside one report column (practice mixes ₹ $ £ €).
- Drill: SQRT with ROUND for a report column from memory.
- SQRT vs POWER: dedicated root versus general exponent.
- Fictional sample data only — names and amounts are for learning.
- Print the SQRT revision card for one week of real worksheets.
- Ask juniors to predict before they press Enter.
- Track your top mistake with this function monthly.
- RMS-style checks in Pune engineering and Stuttgart labs. Mixed ₹ and €.
- Interview tip: explain the business question before the formula.
- Classroom drill: invent three brand-new formulas from your city without the page open.
- If a result looks wrong, check blanks vs zeros before rewriting.
- When Excel versions differ, note the LibreOffice / Sheets fallback in a cell comment.
- Prefer clear ranges over whole-column refs on huge sheets if speed matters.
- Document units (₹, kg, days) in the header so totals stay honest.
- Print the revision card for SQRT for one week of real worksheets.
- When helping a junior, ask them to predict before Enter.
- Share one tip with a classmate in Marathi or Hindi.
- Keep currency symbols consistent inside a single report column.
- Interview tip: explain the business question before the formula.
- If a result looks wrong, check blanks vs zeros before rewriting maths.
- When Excel versions differ, write a LibreOffice fallback under a comment.
In real work
Drill: SQRT with ROUND for a report column from memory. RMS-style checks in Pune engineering and Stuttgart labs. Mixed ₹ and €. Classroom drill: write three brand-new SQRT formulas on a blank sheet using names from your own city — if you can invent them without the page open, you own the skill. Then break one formula on purpose and watch the error; recovering from that break is half of interview readiness. Always verify with a known case before trusting a long chain. Keep a personal notebook of the one mistake you make most often with this function; review it monthly.
How it compares
SQRT vs POWER: dedicated root versus general exponent.
Interview corner
- SQRT vs POWER 0.5?
- Same for n≥0.
- SQRT(-4)?
- #NUM!.
- Display?
- ROUND.
Related functions
Practice tasks (10)
- Task 1. SQRT(9).3.
- Task 2. SQRT(2) approx.1.41
- Task 3. Show #NUM! on -4.Neg.
- Task 4. Compare POWER.Interview.
- Task 5. ROUND display.ROUND.
- Task 6. Fill.Fill.
- Task 7. Doc.Note.
- Task 8. Teach.Teach.
- Task 9. Zero case.0.
- Task 10. Bonus ABS guard.Related.
Quick quiz
Answers: Q1=3, Q2=#NUM!, Q3=0, Q4=POWER(n,0.5), Q5=ABS / reject (check after you try).
Revision card
Standalone card (no tip or photo strip). QR opens this lesson. Download the PNG and revise offline.
