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Free Virtual Abacus Tool.
Online Abacus Simulator.

A free digital abacus with 3 to 17 rods for abacus teachers and institutes. Use it in class, on a smartboard or over screen-share — no sign-up, no download.

Solve Sum on Beads:
3 + 5 + 1
Arrange beads to equal answer = 9
Click upper bead for 5, lower beads for 1–4. The rightmost rod is units.
Current Bead Value
Units · Tens · Hundreds · Thousands
0

Institutes get the same abacus inside ERPLI for live classes, homework and exams.

Free, No Sign-Up Works on Phones Screen-Share Ready
How to Use It For Institutes
Quick Start

How to Use This Virtual Abacus

The online abacus above works like a real soroban. Four steps to your first sum.

  1. Pick your rods. Choose 3 to 17 rods. Beginners start with 5 rods (up to 99,999). Most classes use 13 or 17 rods.
  2. Set a number. Tap a lower bead to add 1 to 4. Tap the upper bead to add 5. The beads that touch the middle bar are the ones that count.
  3. Read the total. The Current Bead Value bar under the abacus shows the number on the frame as you move the beads.
  4. Solve sums. Switch to Solve Sums on Abacus, set the beads to the answer, and check it. Press Reset Beads to clear the frame to zero.
For Institutes

The Same Digital Abacus, Inside ERPLI

Abacus institutes get this digital abacus inside ERPLI, with live classes, homework and exams built around it.

  • Live abacus: every bead you move shows on your students' screens.
  • Homework and exams answered on the beads, checked automatically.
  • Set 5 to 17 rods for each level.
  • Your academy logo and bead colours on the frame.
  • Time-per-move reports to spot students stuck on big friends.
Book a Demo
A teacher laptop synchronizing the same digital Soroban bead positions across student tablets
One teacher abacus, synchronized across every student device.
For Abacus Institutes

Digital Abacus Features for Abacus Institutes

What your teachers and students get when the digital abacus runs inside ERPLI.

In-Abacus Homework & Exams

Assign daily homework where kids cannot guess multiple-choice answers. They must arrange the beads to the exact answer state, validating true comprehension of formulas.

Configurable Rods (5 to 17)

Start beginners on 5 rods (Units, Tens, Hundreds, Thousands). Expand to 7, 9, 13, or 17 rods as students advance to long multiplication, decimals, and square roots.

Real-Time Value Calculation

Instant tabular readout updates as beads touch the reckoning beam. Can be toggled on for teaching or turned off for testing independent student mastery.

Zero-Install Web App

Runs smoothly inside any modern mobile browser with zero app installation required. Works seamlessly on iOS Safari, Android Chrome, Mac, and Windows.

Custom Academy Branding

Align bead gradients, wood finishes, and reckoning beam dots with your academy's brand colors. Parents see your academy's name, not ours.

Bead Speed Analytics

Measure how many seconds a student spends per rod move. Spot students who struggle with Big Friend 10s complement transitions before exams approach.

Two features per slide 1 of 3
Soroban Basics

How to Read Numbers on a Digital Abacus

This digital abacus is a Japanese soroban: one upper bead and four lower beads on every rod. Use this to teach beginners their first class.

Bead values

  • Upper (heaven) bead = 5. It counts when it is pushed down to the bar.
  • Lower (earth) beads = 1 each. They count when they are pushed up to the bar.
  • Each rod is one place value. The rightmost rod is units, then tens, hundreds and thousands to the left.
  • A rod with no beads on the bar is 0.

Example: showing 47

  • Tens rod: push 4 lower beads up = 40.
  • Units rod: push the upper bead down (5) and 2 lower beads up (2) = 7.
  • Total: 40 + 7 = 47. Try it on the abacus above — the value bar will show 47.
Free Abacus Practice

Practice Sums to Teach on the Online Abacus

Ready sums to demo in class, by level. Move a student up when they solve every sum without looking at the value bar.

Level 1: Direct sums

No formulas needed.

  • 2 + 1 = 3
  • 3 + 5 = 8
  • 6 + 3 − 4 = 5

Level 2: Small friends

Use the 5 bead when the lower beads run out.

  • 4 + 1 = 5
  • 3 + 3 = 6
  • 7 − 3 = 4

Level 3: Big friends

Carry to the next rod at 10.

  • 9 + 1 = 10
  • 8 + 5 = 13
  • 15 − 7 = 8

Level 4: Two-digit sums

Work from the left rod to the right.

  • 24 + 13 = 37
  • 36 + 27 = 63
  • 52 − 18 = 34
Compare

Digital Abacus vs Physical Abacus

Both teach the same soroban method. Use each where it works best.

Digital abacusPhysical abacus
CostFree in the browserMust be bought for each child
RodsSwitch between 5, 7 and 9Fixed (usually 13 or 17)
Online classesSharp on screen-share; no webcam glareHard to see on a webcam
Checking answersValue bar shows the total liveTeacher checks by eye
Feel of the beadsTap or drag on a screenReal finger movement with thumb and index finger
Screen timeNeeds a phone, tablet or computerNo screen needed

Most institutes teach finger technique on a physical abacus in class, and use the digital abacus for online classes, homework and exams.

Who Uses It

Who This Digital Abacus Is For

Abacus institutes

Run live classes, homework and level exams on one digital abacus across every batch.

Franchise owners

Set the same rods and rules for each level across all your branches.

Abacus teachers

Show formulas in Zoom or Google Meet without holding a wooden frame to the webcam.

Home tutors

Teach abacus online from home. Your students practise on the same abacus between classes.

Got Questions?

Frequently Asked Questions

Is this online abacus free?
Yes. The virtual abacus on this page is free to use in your browser. No sign-up and no download.
Can I use this virtual abacus to teach online classes?
Yes. Open this page and share your screen in Zoom, Google Meet or any class app. The beads stay sharp on screen-share. Inside ERPLI, every bead you move also shows on your students' screens live.
Can teachers and students use the digital abacus at the same time in live classes?
Yes, inside ERPLI. A teacher can show their abacus to the whole batch, or open any student's abacus to check the beads and show a correction.
How do students do homework and exams on the abacus?
In ERPLI, the sum shows on screen and the student sets the beads to the answer instead of typing it. ERPLI reads the beads and checks the answer automatically.
Can my institute add its logo and set rods per level?
Yes, inside ERPLI. Admins set the rods for each level (for example, 5 rods for Level 1 and 9 rods for Level 4), choose bead colours and add the institute logo to the frame.
Does the virtual abacus work on a phone?
Yes. It works on Android phones, iPhones, tablets and computers. Tap the beads with a finger, or click them with a mouse.
How many rods does the online abacus have?
Choose 3 to 17 rods on this page, the same as a 13- or 17-rod classroom soroban. Beginners should start with 5 rods. Inside ERPLI, institutes can lock the rods for each level.
Is this a soroban or a Chinese abacus?
It is a soroban, the Japanese abacus used in most abacus classes in India. Each rod has 1 upper bead worth 5 and 4 lower beads worth 1. A Chinese suanpan has 2 upper beads and 5 lower beads.

Teach Abacus Online with ERPLI

Live abacus classes, homework on the beads and level exams in one app for your academy.

Use the Free Abacus Book a Live Demo
Try Soroban Book Demo

The digital abacus inside ERPLI

The same abacus your students use in the ERPLI student app, with rods, live total value and reset.

ERPLI Abacus — Student panel: a 13-rod digital abacus with live total value
ERPLI Abacus — Set rods, lower beads and centre rod to match your teaching method
ERPLI Abacus — Formula drills sit right next to the abacus in the practice tools

About ERPLI Abacus

ERPLI Abacus is abacus academy software from ERPLI. It puts live classes, daily practice, games, online exams, certificates, attendance, fees and franchise management in one platform, under your academy's own brand. Digital Abacus is built into ERPLI Abacus and shares data with every other feature, so students, parents, teachers and owners all use the same login.

Explore more of ERPLI Abacus

Abacus PracticeAbacus GamesDaily SessionLive ClassesVedic MathsSyllabus & Worksheets

Built forschoolscoaching institutesprivate tutorsSee all ERPLI Abacus featuresERPLI Abacus pricing